。
She speaks English and French fluently.
Literal
She [topic-は] English [and-と] French [object-を] fluently speaks.
The ~と~ pattern with a single と connecting two items reads as a closed list: 'X and Y, those two specifically' — distinct from や ('X, Y, etc.'), which leaves the door open for more. Here 英語とフランス語 is one tidy pair joined by と, then marked as the object with を. 流暢に gives the manner: na-adjective + に for adverbial use. A clean, declarative sentence with no register flair — at home in a CV or biography note.